Water spray gun



FIG. 1 is a left side elevational view of a water spray gun showing mynew design, the right side being a mirror image thereof, and with thehandle shown in phantom lines not being a part of such design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a water spray gun, as shown and described.